model-based-testing

Test state machine transitions exhaustively with transition matrices and guard truth tables.

5|1|Updated Feb 23, 2026

Search Tags:#typescript #testing #integration-testing #xstate #state-machine #guard-truth-table #context-mutation

Ready to run

npx skills add https://github.com/apankov1/quality-engineering --skill model-based-testing

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: model-based-testing
Source: https://github.com/apankov1/quality-engineering/tree/main/skills/model-based-testing
Command: npx skills add https://github.com/apankov1/quality-engineering --skill model-based-testing

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Tests state machines systematically — don't guess at valid transitions. This tool ensures exhaustive validation of transitions, guards, and terminal states.

Core Features & Use Cases

Utilities to create a state machine from a transition map, validate transitions, generate a full transition matrix, test guard truth tables, and assert context mutations.
Real-world use cases include workflow lifecycles, error-handling pathways, and ensuring deterministic behavior across complex state graphs.

Quick Start

Run a quick sanity check of your state machine by validating a complete path from initial state to a terminal state.

Frequently Asked Questions about model-based-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I exhaustively test state machine transitions in TypeScript?▼

To exhaustively test state machine transitions in TypeScript, you can generate a full transition matrix from your transition map to validate all possible paths and prevent invalid state changes. This ensures every transition is systematically covered.

What is a guard truth table in state machine testing?▼

A guard truth table in state machine testing is a matrix that systematically validates all boolean conditions protecting transitions. Generating this table ensures that every guard condition is evaluated against all possible context states to prevent untested pathways.

How do I validate terminal states in a workflow lifecycle?▼

To validate terminal states in a workflow lifecycle, run a sanity check by validating a complete path from the initial state to the defined terminal state. This confirms the state machine reaches expected end states without entering invalid loops.

Can I use this for integration testing of XState workflows?▼

Yes, you can use this approach for integration testing of XState workflows. It applies to any domain with named states, terminal states, and context mutations, allowing you to validate deterministic behavior across complex state graphs.

What's the best way to prevent invalid paths in complex state graphs?▼

The best way to prevent invalid paths in complex state graphs is to build a transition matrix from your transition map and validate transitions exhaustively. This systematic approach catches invalid pathways that manual testing might miss.